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For omagic & nmagic, add bss size into data magic (needed for brk to work 

right).  Deal with the case that the data segment might fit into all the
trailing part of last text page.
This commit is contained in:
matt 2000-06-21 06:40:04 +00:00
parent b4ee6fb6cc
commit a0cf752d0c
1 changed files with 17 additions and 10 deletions
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27
sys/compat/ibcs2/ibcs2_exec.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: ibcs2_exec.c,v 1.29 2000/06/21 05:45:18 matt Exp $ */
/* $NetBSD: ibcs2_exec.c,v 1.30 2000/06/21 06:40:04 matt Exp $ */
/*
* Copyright (c) 1994, 1995, 1998 Scott Bartram
@ -374,11 +374,13 @@ exec_ibcs2_coff_prep_omagic(p, epp, fp, ap)
VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
/* set up command for bss segment */
if (ap->a_bsize > 0)
if (ap->a_bsize > 0) {
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_zero, ap->a_bsize,
COFF_SEGMENT_ALIGN(fp, ap, ap->a_dstart + ap->a_dsize),
NULLVP, 0,
VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
epp->ep_dsize += ap->a_bsize;
}
return exec_ibcs2_coff_setup_stack(p, epp);
}
@ -438,6 +440,8 @@ exec_ibcs2_coff_prep_nmagic(p, epp, fp, ap)
/* otherwise copy the individual pieces */
toverlap = epp->ep_tsize - tsize;
doverlap = round_page(epp->ep_daddr) - epp->ep_daddr;
if (doverlap > epp->ep_dsize)
doverlap = epp->ep_dsize;
}
} else {
tsize = epp->ep_tsize;
@ -470,14 +474,16 @@ exec_ibcs2_coff_prep_nmagic(p, epp, fp, ap)
COFF_DATOFF(fp, ap)));
}
/* set up command for data segment */
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_readvn, epp->ep_dsize - doverlap,
epp->ep_daddr + doverlap, epp->ep_vp,
COFF_DATOFF(fp, ap) + doverlap,
VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
DPRINTF((" map_readvn(%#lx/%#lx@%#lx)",
epp->ep_daddr + doverlap, epp->ep_dsize - doverlap,
COFF_DATOFF(fp, ap) + doverlap));
if (epp->ep_dsize > doverlap) {
/* set up command for data segment */
NEW_VMCMD(&epp->ep_vmcmds, vmcmd_map_readvn,
epp->ep_dsize - doverlap, epp->ep_daddr + doverlap,
epp->ep_vp, COFF_DATOFF(fp, ap) + doverlap,
VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE);
DPRINTF((" map_readvn(%#lx/%#lx@%#lx)",
epp->ep_daddr + doverlap, epp->ep_dsize - doverlap,
COFF_DATOFF(fp, ap) + doverlap));
}
/* Handle page remainders for pagedvn.
*/
@ -493,6 +499,7 @@ exec_ibcs2_coff_prep_nmagic(p, epp, fp, ap)
DPRINTF((" map_zero(%#lx/%#lx)",
dend, ap->a_bsize - dspace));
}
epp->ep_dsize += ap->a_bsize;
}
DPRINTF(("\n"));